Shoe for sled-runners



(No Model.)

J. R. CAMPBELL.

SHOE FOR SLED RUNNBBS. No. 409,317. Patented Aug. 20, 1889.

' d fitest; Inventor.-

UNITED STATES PATENT OFFICE.

JOHN R. CAMPBELL, OF CLYDE, MINNESOTA.

SHOE FOR SLED-RUNNERS.

SPECIFICATION forming part of Letters Patent No. 409,317, dated August20, 1889.

Application filed June 10, 1889. Serial No. 313,646. (No model.)

To aZZ whom, it may concern:

Be it known that I, JOHN R. CAMPBELL, of Clyde, in the county of \Vinonaand State of Minnesota, have invented certain new an d usefulImprovements in Snow-Shoes for Sleigh- Runners; and I do hereby declarethat the following is a full and exact description thereof, referencebeing had to the accon'lpanying drawings, and to the letters ofreference marked thereon, making a part of this specification.

This invention relates to the application and use of snowshoes uponsleigh-runners, and has for its object to produce an improved snow-shoeadapted to prevent the runner from sinking in soft deep snow, and whichmay be readily attached to the runner of any ordinary sleigh withoutrequiring any change in its form or construction.

It consists in the improved form of snowshoe hereinafter described, andin its combination with the runner and ordinary shoe of the sleigh,substantially in manner as set forth and claimed.

In the accompanying drawings, Figure 1 is a view in perspective of therunner of a sleigh having my invention applied thereto; Fig. aperspective view of my improved sleigh snow-shoe detached, and Fig. 3across-section in line :0 w of Fig. 1.

A represents an ordinary sleigh-runner of any approved style or form,provided, as is customary, with a metallic shoe 15, extendinglongitudinally under the bottom thereof to form its bearing and wearingsurface. This metallic bearing-shoe B is secured to the runner in thecustomary manner by means of bolts C, placed at suitable intervals topass through the shoe and runner, the head of the bolt being countersunkin the shoe, as shown in Fig.

D represents my improved snow-shoe designed as an auxiliary appliancewhich, without interference with the use and operation of the regularrunner-shoe 13 upon hard and icy roads, will, when attached to therunner, come into play to support it in soft deep snow, wherein thesleigh would otherwise so sink as to greatly impede or prevent itsprogress. This improved snowshoe D is constructed of along flat strip ofiron or steel of suitable proportions, which for the runner of anordinary one-team sleigh may be about eight from theheel of the runnerforward far enough i to pass under the bang-iron E (see Fig. 1) at thefront end thereof. The rear end of this shoe D is preferably bent overupon its upper face to stiffen it transversely and form a cylindricalfinishing-piece F, and the two corners at its front end are also bentover upon the upper face, each in a diagonal line at an angle of aboutforty-five degrees, leaving an intermediate plain interval G (see Fig.2) to bear against the runner. A series of apertures o r slots H H arepierced centrally in the iron to correspond with the bolt-holes in therunner, and are severally elongated to permit of its ready adjustment toany runner and insure the registry of the belts with the apertures.

In applying my invention to a sleigh the bolts confining the ordinaryshoe B and the lower end of the bang-iron E upon the runner A areloosened and removed and the sleigh overturned. The fore end of thesnow-shoe D is then fitted upon the runner so that its rear end shalloverlap the end of the runner and its front end, fitting the curvethereof, will pass under the bang-iron. The ordinary shoe Bis thenfitted over and upon the snowshoe in the same position relatively to therunner as it occupied before, so that it may be held and confined asbefore by the bolts passing through the original bolt-holes, the slotsin the snow-shoe permitting these bolts to pass through it to reach saidholes. By this means the snow-shoe is firmly held and confined betweenthe runner and the bearing shoe, as shown in Fig. 3 of the drawings, andis overlapped at its front end by the lower end of the bang-iron andsecured thereat by the bolts which confine it.

011 a hard bearing the sleigh will run, as usual, upon the narrow shoeB; but when this outer shoe sinks in soft snow the broad bearing of thesnow-shoe D will come into play to support the sleigh.

I-contemplate the application of detachable brackets K K in pairs oneach side of the runner as a re-enforce and support for the upper sideof the snow-shoe D to prevent it from bending up, each pair of bracketsbeing confined by a single bolt L extending transversely through therunner and brackets. (See dotted lines, Fig. 3.)

I claim as my invention 1. The combination, with the sleigh-runner, itsnarrow bearing-shoe, and the bolts confining' said shoe to the runner,of an independent wide metallic plate-interposed as a snowshoe betweenthe runner and its bearing-shoe to extend the length thereof and havingelongated apertures formed longitudinally therein to register with thebolt-holes in the runner, substantially in the manner and for thepurpose herein set forth.

2. The combination, with a sleigh-runner and its narrow bearing-shoe, ofan independent wide metallic plate interposed as a snowshoe between therunner and its bearing-shoe, bolts confining the bearing-shoe andinterposed snow-shoe jointly to the runner, and lateral brackets securedto the runner to bear upon and re-enforce the top of the snow-shoe,substantially in the manner and for the purpose herein set forth.

In testimony whereof I have signed my name to this specification in thepresence of two sub scribing witnesses.

JOHN R. CAMPBELL. \Vitnesses:

GEORGE PFEFFERKORN, OTTO PFEFFERKORN.

